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BJP5 Self-Check 17.11: size

Language/Type: Java binary trees implementing IntTree
Related Links:
Author: Marty Stepp (on 2019/09/19)

Write a method size that returns the total number of nodes in the tree. For example, the following tree has a size of 8:

               +---+
               | 6 |
           ___ +---+ ___
         /               \
     +---+               +---+
     | 3 |               | 2 |
     +---+               +---+
    /     \             /     \
+---+     +---+     +---+     +---+
| 1 |     | 4 |     | 6 |     | 4 |
+---+     +---+     +---+     +---+
                                   \
                                   +---+
                                   | 0 |
                                   +---+

Assume that you are adding this method to the IntTree class as defined below:

public class IntTree {
    private IntTreeNode overallRoot;   // null for an empty tree
    ...
}
Type your solution here:


This is a partial class problem. Submit code that will become part of an existing Java class as described. You do not need to write the complete class, just the portion described in the problem.

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